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<h1 id="ibmcloud">IBMCloud<a class="headerlink" href="#ibmcloud" title="Permanent link">&para;</a></h1>
<p>This tutorial describes how to setup ExternalDNS for usage within a Kubernetes cluster using IBMCloud DNS.</p>
<p>This tutorial uses <a href="https://cloud.ibm.com/docs/cli?topic=cli-getting-started">IBMCloud CLI</a> for all<br />
IBM Cloud commands and assumes that the Kubernetes cluster was created via IBM Cloud Kubernetes Service and <code>kubectl</code> commands<br />
are being run on an orchestration node.</p>
<h2 id="creating-a-ibmcloud-dns-zone">Creating a IBMCloud DNS zone<a class="headerlink" href="#creating-a-ibmcloud-dns-zone" title="Permanent link">&para;</a></h2>
<p>The IBMCloud provider for ExternalDNS will find suitable zones for domains it manages; it will<br />
not automatically create zones.<br />
For public zone, This tutorial assume that the <a href="https://cloud.ibm.com/catalog/services/internet-services">IBMCloud Internet Services</a> was provisioned and the <a href="https://cloud.ibm.com/docs/cis?topic=cis-cli-plugin-cis-cli">cis cli plugin</a> was installed with IBMCloud CLI<br />
For private zone, This tutorial assume that the <a href="https://cloud.ibm.com/catalog/services/dns-services">IBMCloud DNS Services</a> was provisioned and the <a href="https://cloud.ibm.com/docs/dns-svcs?topic=dns-svcs-cli-plugin-dns-services-cli-commands">dns cli plugin</a> was installed with IBMCloud CLI</p>
<h3 id="public-zone">Public Zone<a class="headerlink" href="#public-zone" title="Permanent link">&para;</a></h3>
<p>For this tutorial, we create public zone named <code>example.com</code> on IBMCloud Internet Services instance <code>external-dns-public</code></p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a>ibmcloud<span class="w"> </span>cis<span class="w"> </span>domain-add<span class="w"> </span>example.com<span class="w"> </span>-i<span class="w"> </span>external-dns-public
</code></pre></div>
<p>Follow <a href="https://cloud.ibm.com/docs/cis?topic=cis-getting-started#configure-your-name-servers-with-the-registrar-or-existing-dns-provider">step</a> to active your zone</p>
<h3 id="private-zone">Private Zone<a class="headerlink" href="#private-zone" title="Permanent link">&para;</a></h3>
<p>For this tutorial, we create private zone named <code>example.com</code> on IBMCloud DNS Services instance <code>external-dns-private</code></p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a>ibmcloud<span class="w"> </span>dns<span class="w"> </span>zone-create<span class="w"> </span>example.com<span class="w"> </span>-i<span class="w"> </span>external-dns-private
</code></pre></div>
<h2 id="creating-configuration-file">Creating configuration file<a class="headerlink" href="#creating-configuration-file" title="Permanent link">&para;</a></h2>
<p>The preferred way to inject the configuration file is by using a Kubernetes secret. The secret should contain an object named azure.json with content similar to this:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="p">{</span>
<a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a><span class="w"> </span><span class="nt">&quot;apiKey&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;1234567890abcdefghijklmnopqrstuvwxyz&quot;</span><span class="p">,</span>
<a id="__codelineno-2-3" name="__codelineno-2-3" href="#__codelineno-2-3"></a><span class="w"> </span><span class="nt">&quot;instanceCrn&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;crn:v1:bluemix:public:internet-svcs:global:a/bcf1865e99742d38d2d5fc3fb80a5496:b950da8a-5be6-4691-810e-36388c77b0a3::&quot;</span>
<a id="__codelineno-2-4" name="__codelineno-2-4" href="#__codelineno-2-4"></a><span class="p">}</span>
</code></pre></div>
<p>You can create or find the <code>apiKey</code> in your ibmcloud IAM &rarr; <a href="https://cloud.ibm.com/iam/apikeys">API Keys page</a></p>
<p>You can find the <code>instanceCrn</code> in your service instance details</p>
<p>Now you can create a file named &lsquo;ibmcloud.json&rsquo; with values gathered above and with the structure of the example above. Use this file to create a Kubernetes secret:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a>kubectl<span class="w"> </span>create<span class="w"> </span>secret<span class="w"> </span>generic<span class="w"> </span>ibmcloud-config-file<span class="w"> </span>--from-file<span class="o">=</span>/local/path/to/ibmcloud.json
</code></pre></div>
<h2 id="deploy-externaldns">Deploy ExternalDNS<a class="headerlink" href="#deploy-externaldns" title="Permanent link">&para;</a></h2>
<p>Connect your <code>kubectl</code> client to the cluster you want to test ExternalDNS with.<br />
Then apply one of the following manifests file to deploy ExternalDNS.</p>
<h3 id="manifest-for-clusters-without-rbac-enabled">Manifest (for clusters without RBAC enabled)<a class="headerlink" href="#manifest-for-clusters-without-rbac-enabled" title="Permanent link">&para;</a></h3>
<div class="highlight"><pre><span></span><code><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">apps/v1</span>
<a id="__codelineno-4-2" name="__codelineno-4-2" href="#__codelineno-4-2"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">Deployment</span>
<a id="__codelineno-4-3" name="__codelineno-4-3" href="#__codelineno-4-3"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-4-4" name="__codelineno-4-4" href="#__codelineno-4-4"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-4-5" name="__codelineno-4-5" href="#__codelineno-4-5"></a><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-4-6" name="__codelineno-4-6" href="#__codelineno-4-6"></a><span class="w"> </span><span class="nt">strategy</span><span class="p">:</span>
<a id="__codelineno-4-7" name="__codelineno-4-7" href="#__codelineno-4-7"></a><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">Recreate</span>
<a id="__codelineno-4-8" name="__codelineno-4-8" href="#__codelineno-4-8"></a><span class="w"> </span><span class="nt">selector</span><span class="p">:</span>
<a id="__codelineno-4-9" name="__codelineno-4-9" href="#__codelineno-4-9"></a><span class="w"> </span><span class="nt">matchLabels</span><span class="p">:</span>
<a id="__codelineno-4-10" name="__codelineno-4-10" href="#__codelineno-4-10"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-4-11" name="__codelineno-4-11" href="#__codelineno-4-11"></a><span class="w"> </span><span class="nt">template</span><span class="p">:</span>
<a id="__codelineno-4-12" name="__codelineno-4-12" href="#__codelineno-4-12"></a><span class="w"> </span><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-4-13" name="__codelineno-4-13" href="#__codelineno-4-13"></a><span class="w"> </span><span class="nt">labels</span><span class="p">:</span>
<a id="__codelineno-4-14" name="__codelineno-4-14" href="#__codelineno-4-14"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-4-15" name="__codelineno-4-15" href="#__codelineno-4-15"></a><span class="w"> </span><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-4-16" name="__codelineno-4-16" href="#__codelineno-4-16"></a><span class="w"> </span><span class="nt">containers</span><span class="p">:</span>
<a id="__codelineno-4-17" name="__codelineno-4-17" href="#__codelineno-4-17"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-4-18" name="__codelineno-4-18" href="#__codelineno-4-18"></a><span class="w"> </span><span class="nt">image</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">registry.k8s.io/external-dns/external-dns:v0.15.1</span>
<a id="__codelineno-4-19" name="__codelineno-4-19" href="#__codelineno-4-19"></a><span class="w"> </span><span class="nt">args</span><span class="p">:</span>
<a id="__codelineno-4-20" name="__codelineno-4-20" href="#__codelineno-4-20"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--source=service</span><span class="w"> </span><span class="c1"># ingress is also possible</span>
<a id="__codelineno-4-21" name="__codelineno-4-21" href="#__codelineno-4-21"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--domain-filter=example.com</span><span class="w"> </span><span class="c1"># (optional) limit to only example.com domains; change to match the zone created above.</span>
<a id="__codelineno-4-22" name="__codelineno-4-22" href="#__codelineno-4-22"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--provider=ibmcloud</span>
<a id="__codelineno-4-23" name="__codelineno-4-23" href="#__codelineno-4-23"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--ibmcloud-proxied</span><span class="w"> </span><span class="c1"># (optional) enable the proxy feature of IBMCloud</span>
<a id="__codelineno-4-24" name="__codelineno-4-24" href="#__codelineno-4-24"></a><span class="w"> </span><span class="nt">volumeMounts</span><span class="p">:</span>
<a id="__codelineno-4-25" name="__codelineno-4-25" href="#__codelineno-4-25"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ibmcloud-config-file</span>
<a id="__codelineno-4-26" name="__codelineno-4-26" href="#__codelineno-4-26"></a><span class="w"> </span><span class="nt">mountPath</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">/etc/kubernetes</span>
<a id="__codelineno-4-27" name="__codelineno-4-27" href="#__codelineno-4-27"></a><span class="w"> </span><span class="nt">readOnly</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">true</span>
<a id="__codelineno-4-28" name="__codelineno-4-28" href="#__codelineno-4-28"></a><span class="w"> </span><span class="nt">volumes</span><span class="p">:</span>
<a id="__codelineno-4-29" name="__codelineno-4-29" href="#__codelineno-4-29"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ibmcloud-config-file</span>
<a id="__codelineno-4-30" name="__codelineno-4-30" href="#__codelineno-4-30"></a><span class="w"> </span><span class="nt">secret</span><span class="p">:</span>
<a id="__codelineno-4-31" name="__codelineno-4-31" href="#__codelineno-4-31"></a><span class="w"> </span><span class="nt">secretName</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ibmcloud-config-file</span>
<a id="__codelineno-4-32" name="__codelineno-4-32" href="#__codelineno-4-32"></a><span class="w"> </span><span class="nt">items</span><span class="p">:</span>
<a id="__codelineno-4-33" name="__codelineno-4-33" href="#__codelineno-4-33"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">key</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">externaldns-config.json</span>
<a id="__codelineno-4-34" name="__codelineno-4-34" href="#__codelineno-4-34"></a><span class="w"> </span><span class="nt">path</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ibmcloud.json</span>
</code></pre></div>
<h3 id="manifest-for-clusters-with-rbac-enabled">Manifest (for clusters with RBAC enabled)<a class="headerlink" href="#manifest-for-clusters-with-rbac-enabled" title="Permanent link">&para;</a></h3>
<div class="highlight"><pre><span></span><code><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">v1</span>
<a id="__codelineno-5-2" name="__codelineno-5-2" href="#__codelineno-5-2"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ServiceAccount</span>
<a id="__codelineno-5-3" name="__codelineno-5-3" href="#__codelineno-5-3"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-5-4" name="__codelineno-5-4" href="#__codelineno-5-4"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-5-5" name="__codelineno-5-5" href="#__codelineno-5-5"></a><span class="nn">---</span>
<a id="__codelineno-5-6" name="__codelineno-5-6" href="#__codelineno-5-6"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">rbac.authorization.k8s.io/v1</span>
<a id="__codelineno-5-7" name="__codelineno-5-7" href="#__codelineno-5-7"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ClusterRole</span>
<a id="__codelineno-5-8" name="__codelineno-5-8" href="#__codelineno-5-8"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-5-9" name="__codelineno-5-9" href="#__codelineno-5-9"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-5-10" name="__codelineno-5-10" href="#__codelineno-5-10"></a><span class="nt">rules</span><span class="p">:</span>
<a id="__codelineno-5-11" name="__codelineno-5-11" href="#__codelineno-5-11"></a><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">apiGroups</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-5-12" name="__codelineno-5-12" href="#__codelineno-5-12"></a><span class="w"> </span><span class="nt">resources</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;services&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;endpoints&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;pods&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-5-13" name="__codelineno-5-13" href="#__codelineno-5-13"></a><span class="w"> </span><span class="nt">verbs</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;get&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;watch&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;list&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-5-14" name="__codelineno-5-14" href="#__codelineno-5-14"></a><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">apiGroups</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;extensions&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;networking.k8s.io&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-5-15" name="__codelineno-5-15" href="#__codelineno-5-15"></a><span class="w"> </span><span class="nt">resources</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;ingresses&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-5-16" name="__codelineno-5-16" href="#__codelineno-5-16"></a><span class="w"> </span><span class="nt">verbs</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;get&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;watch&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;list&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-5-17" name="__codelineno-5-17" href="#__codelineno-5-17"></a><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">apiGroups</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-5-18" name="__codelineno-5-18" href="#__codelineno-5-18"></a><span class="w"> </span><span class="nt">resources</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;nodes&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-5-19" name="__codelineno-5-19" href="#__codelineno-5-19"></a><span class="w"> </span><span class="nt">verbs</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;list&quot;</span><span class="p p-Indicator">,</span><span class="w"> </span><span class="s">&quot;watch&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-5-20" name="__codelineno-5-20" href="#__codelineno-5-20"></a><span class="nn">---</span>
<a id="__codelineno-5-21" name="__codelineno-5-21" href="#__codelineno-5-21"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">rbac.authorization.k8s.io/v1</span>
<a id="__codelineno-5-22" name="__codelineno-5-22" href="#__codelineno-5-22"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ClusterRoleBinding</span>
<a id="__codelineno-5-23" name="__codelineno-5-23" href="#__codelineno-5-23"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-5-24" name="__codelineno-5-24" href="#__codelineno-5-24"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns-viewer</span>
<a id="__codelineno-5-25" name="__codelineno-5-25" href="#__codelineno-5-25"></a><span class="nt">roleRef</span><span class="p">:</span>
<a id="__codelineno-5-26" name="__codelineno-5-26" href="#__codelineno-5-26"></a><span class="w"> </span><span class="nt">apiGroup</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">rbac.authorization.k8s.io</span>
<a id="__codelineno-5-27" name="__codelineno-5-27" href="#__codelineno-5-27"></a><span class="w"> </span><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ClusterRole</span>
<a id="__codelineno-5-28" name="__codelineno-5-28" href="#__codelineno-5-28"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-5-29" name="__codelineno-5-29" href="#__codelineno-5-29"></a><span class="nt">subjects</span><span class="p">:</span>
<a id="__codelineno-5-30" name="__codelineno-5-30" href="#__codelineno-5-30"></a><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ServiceAccount</span>
<a id="__codelineno-5-31" name="__codelineno-5-31" href="#__codelineno-5-31"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-5-32" name="__codelineno-5-32" href="#__codelineno-5-32"></a><span class="w"> </span><span class="nt">namespace</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">default</span>
<a id="__codelineno-5-33" name="__codelineno-5-33" href="#__codelineno-5-33"></a><span class="nn">---</span>
<a id="__codelineno-5-34" name="__codelineno-5-34" href="#__codelineno-5-34"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">apps/v1</span>
<a id="__codelineno-5-35" name="__codelineno-5-35" href="#__codelineno-5-35"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">Deployment</span>
<a id="__codelineno-5-36" name="__codelineno-5-36" href="#__codelineno-5-36"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-5-37" name="__codelineno-5-37" href="#__codelineno-5-37"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-5-38" name="__codelineno-5-38" href="#__codelineno-5-38"></a><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-5-39" name="__codelineno-5-39" href="#__codelineno-5-39"></a><span class="w"> </span><span class="nt">strategy</span><span class="p">:</span>
<a id="__codelineno-5-40" name="__codelineno-5-40" href="#__codelineno-5-40"></a><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">Recreate</span>
<a id="__codelineno-5-41" name="__codelineno-5-41" href="#__codelineno-5-41"></a><span class="w"> </span><span class="nt">selector</span><span class="p">:</span>
<a id="__codelineno-5-42" name="__codelineno-5-42" href="#__codelineno-5-42"></a><span class="w"> </span><span class="nt">matchLabels</span><span class="p">:</span>
<a id="__codelineno-5-43" name="__codelineno-5-43" href="#__codelineno-5-43"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-5-44" name="__codelineno-5-44" href="#__codelineno-5-44"></a><span class="w"> </span><span class="nt">template</span><span class="p">:</span>
<a id="__codelineno-5-45" name="__codelineno-5-45" href="#__codelineno-5-45"></a><span class="w"> </span><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-5-46" name="__codelineno-5-46" href="#__codelineno-5-46"></a><span class="w"> </span><span class="nt">labels</span><span class="p">:</span>
<a id="__codelineno-5-47" name="__codelineno-5-47" href="#__codelineno-5-47"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-5-48" name="__codelineno-5-48" href="#__codelineno-5-48"></a><span class="w"> </span><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-5-49" name="__codelineno-5-49" href="#__codelineno-5-49"></a><span class="w"> </span><span class="nt">serviceAccountName</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-5-50" name="__codelineno-5-50" href="#__codelineno-5-50"></a><span class="w"> </span><span class="nt">containers</span><span class="p">:</span>
<a id="__codelineno-5-51" name="__codelineno-5-51" href="#__codelineno-5-51"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-5-52" name="__codelineno-5-52" href="#__codelineno-5-52"></a><span class="w"> </span><span class="nt">image</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">registry.k8s.io/external-dns/external-dns:v0.15.1</span>
<a id="__codelineno-5-53" name="__codelineno-5-53" href="#__codelineno-5-53"></a><span class="w"> </span><span class="nt">args</span><span class="p">:</span>
<a id="__codelineno-5-54" name="__codelineno-5-54" href="#__codelineno-5-54"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--source=service</span><span class="w"> </span><span class="c1"># ingress is also possible</span>
<a id="__codelineno-5-55" name="__codelineno-5-55" href="#__codelineno-5-55"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--domain-filter=example.com</span><span class="w"> </span><span class="c1"># (optional) limit to only example.com domains; change to match the zone created above.</span>
<a id="__codelineno-5-56" name="__codelineno-5-56" href="#__codelineno-5-56"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--provider=ibmcloud</span>
<a id="__codelineno-5-57" name="__codelineno-5-57" href="#__codelineno-5-57"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--ibmcloud-proxied</span><span class="w"> </span><span class="c1"># (optional) enable the proxy feature of IBMCloud public zone</span>
<a id="__codelineno-5-58" name="__codelineno-5-58" href="#__codelineno-5-58"></a><span class="w"> </span><span class="nt">volumeMounts</span><span class="p">:</span>
<a id="__codelineno-5-59" name="__codelineno-5-59" href="#__codelineno-5-59"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ibmcloud-config-file</span>
<a id="__codelineno-5-60" name="__codelineno-5-60" href="#__codelineno-5-60"></a><span class="w"> </span><span class="nt">mountPath</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">/etc/kubernetes</span>
<a id="__codelineno-5-61" name="__codelineno-5-61" href="#__codelineno-5-61"></a><span class="w"> </span><span class="nt">readOnly</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">true</span>
<a id="__codelineno-5-62" name="__codelineno-5-62" href="#__codelineno-5-62"></a><span class="w"> </span><span class="nt">volumes</span><span class="p">:</span>
<a id="__codelineno-5-63" name="__codelineno-5-63" href="#__codelineno-5-63"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ibmcloud-config-file</span>
<a id="__codelineno-5-64" name="__codelineno-5-64" href="#__codelineno-5-64"></a><span class="w"> </span><span class="nt">secret</span><span class="p">:</span>
<a id="__codelineno-5-65" name="__codelineno-5-65" href="#__codelineno-5-65"></a><span class="w"> </span><span class="nt">secretName</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ibmcloud-config-file</span>
<a id="__codelineno-5-66" name="__codelineno-5-66" href="#__codelineno-5-66"></a><span class="w"> </span><span class="nt">items</span><span class="p">:</span>
<a id="__codelineno-5-67" name="__codelineno-5-67" href="#__codelineno-5-67"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">key</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">externaldns-config.json</span>
<a id="__codelineno-5-68" name="__codelineno-5-68" href="#__codelineno-5-68"></a><span class="w"> </span><span class="nt">path</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ibmcloud.json</span>
</code></pre></div>
<h2 id="deploying-an-nginx-service">Deploying an Nginx Service<a class="headerlink" href="#deploying-an-nginx-service" title="Permanent link">&para;</a></h2>
<p>Create a service file called <code>nginx.yaml</code> with the following contents:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">apps/v1</span>
<a id="__codelineno-6-2" name="__codelineno-6-2" href="#__codelineno-6-2"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">Deployment</span>
<a id="__codelineno-6-3" name="__codelineno-6-3" href="#__codelineno-6-3"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-6-4" name="__codelineno-6-4" href="#__codelineno-6-4"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-6-5" name="__codelineno-6-5" href="#__codelineno-6-5"></a><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-6-6" name="__codelineno-6-6" href="#__codelineno-6-6"></a><span class="w"> </span><span class="nt">selector</span><span class="p">:</span>
<a id="__codelineno-6-7" name="__codelineno-6-7" href="#__codelineno-6-7"></a><span class="w"> </span><span class="nt">matchLabels</span><span class="p">:</span>
<a id="__codelineno-6-8" name="__codelineno-6-8" href="#__codelineno-6-8"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-6-9" name="__codelineno-6-9" href="#__codelineno-6-9"></a><span class="w"> </span><span class="nt">template</span><span class="p">:</span>
<a id="__codelineno-6-10" name="__codelineno-6-10" href="#__codelineno-6-10"></a><span class="w"> </span><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-6-11" name="__codelineno-6-11" href="#__codelineno-6-11"></a><span class="w"> </span><span class="nt">labels</span><span class="p">:</span>
<a id="__codelineno-6-12" name="__codelineno-6-12" href="#__codelineno-6-12"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-6-13" name="__codelineno-6-13" href="#__codelineno-6-13"></a><span class="w"> </span><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-6-14" name="__codelineno-6-14" href="#__codelineno-6-14"></a><span class="w"> </span><span class="nt">containers</span><span class="p">:</span>
<a id="__codelineno-6-15" name="__codelineno-6-15" href="#__codelineno-6-15"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">image</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-6-16" name="__codelineno-6-16" href="#__codelineno-6-16"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-6-17" name="__codelineno-6-17" href="#__codelineno-6-17"></a><span class="w"> </span><span class="nt">ports</span><span class="p">:</span>
<a id="__codelineno-6-18" name="__codelineno-6-18" href="#__codelineno-6-18"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">containerPort</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">80</span>
<a id="__codelineno-6-19" name="__codelineno-6-19" href="#__codelineno-6-19"></a><span class="nn">---</span>
<a id="__codelineno-6-20" name="__codelineno-6-20" href="#__codelineno-6-20"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">v1</span>
<a id="__codelineno-6-21" name="__codelineno-6-21" href="#__codelineno-6-21"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">Service</span>
<a id="__codelineno-6-22" name="__codelineno-6-22" href="#__codelineno-6-22"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-6-23" name="__codelineno-6-23" href="#__codelineno-6-23"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-6-24" name="__codelineno-6-24" href="#__codelineno-6-24"></a><span class="w"> </span><span class="nt">annotations</span><span class="p">:</span>
<a id="__codelineno-6-25" name="__codelineno-6-25" href="#__codelineno-6-25"></a><span class="w"> </span><span class="nt">external-dns.alpha.kubernetes.io/hostname</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">www.example.com</span>
<a id="__codelineno-6-26" name="__codelineno-6-26" href="#__codelineno-6-26"></a><span class="w"> </span><span class="nt">external-dns.alpha.kubernetes.io/ttl</span><span class="p">:</span><span class="w"> </span><span class="s">&quot;120&quot;</span><span class="w"> </span><span class="c1">#optional</span>
<a id="__codelineno-6-27" name="__codelineno-6-27" href="#__codelineno-6-27"></a><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-6-28" name="__codelineno-6-28" href="#__codelineno-6-28"></a><span class="w"> </span><span class="nt">selector</span><span class="p">:</span>
<a id="__codelineno-6-29" name="__codelineno-6-29" href="#__codelineno-6-29"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-6-30" name="__codelineno-6-30" href="#__codelineno-6-30"></a><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">LoadBalancer</span>
<a id="__codelineno-6-31" name="__codelineno-6-31" href="#__codelineno-6-31"></a><span class="w"> </span><span class="nt">ports</span><span class="p">:</span>
<a id="__codelineno-6-32" name="__codelineno-6-32" href="#__codelineno-6-32"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">protocol</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">TCP</span>
<a id="__codelineno-6-33" name="__codelineno-6-33" href="#__codelineno-6-33"></a><span class="w"> </span><span class="nt">port</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">80</span>
<a id="__codelineno-6-34" name="__codelineno-6-34" href="#__codelineno-6-34"></a><span class="w"> </span><span class="nt">targetPort</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">80</span>
</code></pre></div>
<p>Note the annotation on the service; use the hostname as the IBMCloud DNS zone created above. The annotation may also be a subdomain<br />
of the DNS zone (e.g. &lsquo;www.example.com&rsquo;).</p>
<p>By setting the TTL annotation on the service, you have to pass a valid TTL, which must be 120 or above.<br />
This annotation is optional, if you won&rsquo;t set it, it will be 1 (automatic) which is 300.</p>
<p>ExternalDNS uses this annotation to determine what services should be registered with DNS. Removing the annotation<br />
will cause ExternalDNS to remove the corresponding DNS records.</p>
<p>Create the deployment and service:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-7-1" name="__codelineno-7-1" href="#__codelineno-7-1"></a>kubectl<span class="w"> </span>create<span class="w"> </span>-f<span class="w"> </span>nginx.yaml
</code></pre></div>
<p>Depending where you run your service it can take a little while for your cloud provider to create an external IP for the service.</p>
<p>Once the service has an external IP assigned, ExternalDNS will notice the new service IP address and synchronize<br />
the IBMCloud DNS records.</p>
<h2 id="verifying-ibmcloud-dns-records">Verifying IBMCloud DNS records<a class="headerlink" href="#verifying-ibmcloud-dns-records" title="Permanent link">&para;</a></h2>
<p>Run the following command to view the A records:</p>
<h3 id="public-zone_1">Public Zone<a class="headerlink" href="#public-zone_1" title="Permanent link">&para;</a></h3>
<div class="highlight"><pre><span></span><code><a id="__codelineno-8-1" name="__codelineno-8-1" href="#__codelineno-8-1"></a><span class="c1"># Get the domain ID with below command on IBMCloud Internet Services instance `external-dns-public`</span>
<a id="__codelineno-8-2" name="__codelineno-8-2" href="#__codelineno-8-2"></a>$<span class="w"> </span>ibmcloud<span class="w"> </span>cis<span class="w"> </span>domains<span class="w"> </span>-i<span class="w"> </span>external-dns-public
<a id="__codelineno-8-3" name="__codelineno-8-3" href="#__codelineno-8-3"></a><span class="c1"># Get the records with domain ID</span>
<a id="__codelineno-8-4" name="__codelineno-8-4" href="#__codelineno-8-4"></a>$<span class="w"> </span>ibmcloud<span class="w"> </span>cis<span class="w"> </span>dns-records<span class="w"> </span>DOMAIN_ID<span class="w"> </span>-i<span class="w"> </span>external-dns-public
</code></pre></div>
<h3 id="private-zone_1">Private Zone<a class="headerlink" href="#private-zone_1" title="Permanent link">&para;</a></h3>
<div class="highlight"><pre><span></span><code><a id="__codelineno-9-1" name="__codelineno-9-1" href="#__codelineno-9-1"></a><span class="c1"># Get the domain ID with below command on IBMCloud DNS Services instance `external-dns-private`</span>
<a id="__codelineno-9-2" name="__codelineno-9-2" href="#__codelineno-9-2"></a>$<span class="w"> </span>ibmcloud<span class="w"> </span>dns<span class="w"> </span>zones<span class="w"> </span>-i<span class="w"> </span>external-dns-private
<a id="__codelineno-9-3" name="__codelineno-9-3" href="#__codelineno-9-3"></a><span class="c1"># Get the records with domain ID</span>
<a id="__codelineno-9-4" name="__codelineno-9-4" href="#__codelineno-9-4"></a>$<span class="w"> </span>ibmcloud<span class="w"> </span>dns<span class="w"> </span>resource-records<span class="w"> </span>ZONE_ID<span class="w"> </span>-i<span class="w"> </span>external-dns-public
</code></pre></div>
<p>This should show the external IP address of the service as the A record for your domain.</p>
<h2 id="cleanup">Cleanup<a class="headerlink" href="#cleanup" title="Permanent link">&para;</a></h2>
<p>Now that we have verified that ExternalDNS will automatically manage IBMCloud DNS records, we can delete the tutorial&rsquo;s example:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-10-1" name="__codelineno-10-1" href="#__codelineno-10-1"></a>kubectl<span class="w"> </span>delete<span class="w"> </span>-f<span class="w"> </span>nginx.yaml
<a id="__codelineno-10-2" name="__codelineno-10-2" href="#__codelineno-10-2"></a>kubectl<span class="w"> </span>delete<span class="w"> </span>-f<span class="w"> </span>externaldns.yaml
</code></pre></div>
<h2 id="setting-proxied-records-on-public-zone">Setting proxied records on public zone<a class="headerlink" href="#setting-proxied-records-on-public-zone" title="Permanent link">&para;</a></h2>
<p>Using the <code>external-dns.alpha.kubernetes.io/ibmcloud-proxied: "true"</code> annotation on your ingress or service, you can specify if the proxy feature of IBMCloud public DNS should be enabled for that record. This setting will override the global <code>--ibmcloud-proxied</code> setting.</p>
<h2 id="active-priviate-zone-with-vpc-allocated">Active priviate zone with VPC allocated<a class="headerlink" href="#active-priviate-zone-with-vpc-allocated" title="Permanent link">&para;</a></h2>
<p>By default, IBMCloud DNS Services don&rsquo;t active your private zone with new zone added.<br />
With External DNS, you can use <code>external-dns.alpha.kubernetes.io/ibmcloud-vpc: "crn:v1:bluemix:public:is:us-south:a/bcf1865e99742d38d2d5fc3fb80a5496::vpc:r006-74353823-a60d-42e4-97c5-5e2551278435"</code> annotation on your ingress or service.<br />
It will active your private zone with in specific VPC for that record created in.<br />
This setting won&rsquo;t work if the private zone was active already.</p>
<p>Note: the annotaion value is the VPC CRN, every IBM Cloud service have a valid CRN.</p>
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